This year I am shooting carbons for the first time and since I had a good supply of 125 thunderheads I decided to stay with that same weight field points on the lighter arrows. I tried my broadheads last night for the first time and they flew great except they were almost exactly 10 yards off (30 yd pin hit the bull at 20 yds and the 40 yd pin at 30, etc). Seemed strange the there would be that kind of drop off with the same weight. I have had strange flights in the past but not a consistent drop like that. I am going to my pro shop this am and have my field points weighed to verify that but I am reasonably sure they are the 125s. It won't be that tough to adjust the sights but I don't like the idea of doing each time I practice and hunt. Any thoughts?

I've never had that happen before. I shoot 4-blade muzzy's, with practice blades and they fly the same path as my 125 field points do. I never have to change a thing.

Those 125's might be too heavy for the new arrow. Maybe give 100gr a try?